更新数据库：错误 asp.net 内核与 mysql

Question

im using mysql database with EF core.

i use Identity Schema to my existed MySql database, after doing a migration, update database generate this:

"A schema "Identity" has been set for an object of type "CreateTableOperation" with the name of "Role". MySQL does not support the EF Core concept of schemas. Any schema property of any "MigrationOperation" must be null. This behavior can be changed by setting the SchemaBehavior option in the UseMySql call."

error pic So how to set the schemabehavior option. With gratitude.

Answer 1

Update your service registrator (Startup.cs) and modify the DB context to set the SchemaBehavior option as one of the following:

// Throw an exception, if a schema is being used. This is the default.
options.UseMySql(myConnectionString, b => b.SchemaBehavior(MySqlSchemaBehavior.Throw))

// Silently ignore any schema definitions.
options.UseMySql(myConnectionString, b => b.SchemaBehavior(MySqlSchemaBehavior.Ignore))

// Use the specified translator delegate to translate from an input schema and object name to
// an output object name whenever a schema is being used.
options.UseMySql(myConnectionString, b => b.SchemaBehavior(MySqlSchemaBehavior.Translate,
    (schema, entity) => $"{schema ?? "dbo"}_{entity}"))